the weird thing is, I have gone to the doctor, and they say everything is fine. It is obviously not, though

Does it have anything to do with your recent brake-up? You did have troubles to eat for days and still are having a hard time trying to deal with it. I hate to vring it up but if the doctors can't find a problem for it I am thinking its because of that. Did you tell your doctor about whats been happening and the emotion side it hit your feelings?

As I said in your last thread I know your hurt but stop the communication and try to move on to something else because he will always be the fall back on your emotions. The only way to get stronger is if you find the strengh to move on. You can do it